Halifax or Vancouver our Low priced answert to the heavy weight objects movement, Wheel casters like our VXB00515050BNY will be rolling your machine or equipment back and forth. Spinning on wheel that has 150mm diameter/5.906" inch. The thickness of the wheel is 50mm or 1.969" inch. The Caster with the wheel from end to end is 190mm = 7.480" inch. Top Plate is the method of installing the caster to your equipment, dimensions are 115mm x 110mm x 6mm with the holes distance of 72mm x 85mm. The Double ball beaing design will enable the Polyamide (Nylon) tire to roll easily with a core made of Polyamide (Nylon). Each caster wheel will carry the load of 1543 lb and is Swivel type. Ambient temperature range is -40 to 180 F. FYI, you will need to buy the VXB00515050BNY in order to get one :).